| 11. | For a survey of current work toward creating a quantum theory of gravitation, see quantum gravity.
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| 12. | In particular, no successful theory of gravitation based on a particle theory has yet been proposed.
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| 13. | In any metric theory of gravitation, all gravitational effects arise from the curvature of the metric.
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| 14. | Scalar theories of gravitation include conformally flat theories and stratified theories with time-orthogonal space slices.
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| 15. | Cartan ( 1922, 1923 ) suggested a simple generalization of Einstein's theory of gravitation.
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| 16. | The first attempts to present a relativistic ( classical ) field theory of gravitation were also scalar theories.
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| 17. | Technically, general relativity is a theory of gravitation whose defining feature is its use of the Einstein field equations.
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| 18. | He later succeeded in producing an alternative theory of gravitation, General Relativity, which obeys the principle of locality.
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| 19. | Alley developed some of the earliest important laboratory tests of Albert Einstein's theories of alternative theories of gravitation.
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| 20. | Vacuum Bianchi type V and VI ( 0 ) cosmological models in a new scalar-tensor theory of gravitation.
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